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Standardize retry mechanism (#1649)

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* [utils] Create `RetryManager`
* Migrate all retries to use the manager
* [extractor] Add wrapper methods for convenience
* Standardize console messages for retries
* Add `--retry-sleep` for extractors
This commit is contained in:
pukkandan
2022-08-02 01:43:18 +05:30
committed by GitHub
parent bfd973ece3
commit be5c1ae862
15 changed files with 256 additions and 277 deletions
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22
yt_dlp/downloader/external.py
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@@ -10,6 +10,7 @@ from ..compat import functools
from ..postprocessor.ffmpeg import EXT_TO_OUT_FORMATS, FFmpegPostProcessor
from ..utils import (
Popen,
RetryManager,
_configuration_args,
check_executable,
classproperty,
@@ -134,29 +135,22 @@ class ExternalFD(FragmentFD):
self.to_stderr(stderr)
return returncode
fragment_retries = self.params.get('fragment_retries', 0)
skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
count = 0
while count <= fragment_retries:
retry_manager = RetryManager(self.params.get('fragment_retries'), self.report_retry,
frag_index=None, fatal=not skip_unavailable_fragments)
for retry in retry_manager:
_, stderr, returncode = Popen.run(cmd, text=True, stderr=subprocess.PIPE)
if not returncode:
break
# TODO: Decide whether to retry based on error code
# https://aria2.github.io/manual/en/html/aria2c.html#exit-status
if stderr:
self.to_stderr(stderr)
count += 1
if count <= fragment_retries:
self.to_screen(
'[%s] Got error. Retrying fragments (attempt %d of %s)...'
% (self.get_basename(), count, self.format_retries(fragment_retries)))
self.sleep_retry('fragment', count)
if count > fragment_retries:
if not skip_unavailable_fragments:
self.report_error('Giving up after %s fragment retries' % fragment_retries)
return -1
retry.error = Exception()
continue
if not skip_unavailable_fragments and retry_manager.error:
return -1
decrypt_fragment = self.decrypter(info_dict)
dest, _ = self.sanitize_open(tmpfilename, 'wb')